Vacuum Relief valvewater heater

Quickly swap out what you need with the Check #2 Seat Retainer Repair Kit for 2-1/2" - 4"  for Zurn backflow preventors 350/375/450/475. Pack of 6 check seat retainers.

The Zurn Wilkins 350ADA Double Check Detector Backflow Preventer is ideal for fire protection applications. Its metered bypass detects leaks and unauthorized water use. Used in low health hazard applications.

Vacuum relief valveaviation

Marathon water heater models changed in March of 2009 to require a different vacuum relief valve. Now there are two different kinds of valves available depending on when your water heater was manufactured. Please see model numbers and descriptions below:

Rheem’s highly efficient Residential Hybrid Electric Water Heater is offered in 40, 50, 65 and 80-gallon sizes to fit your needs.

Vacuum Relief valvepurpose

Quickly swap out what you need with the Check #1 Seat Retainer Repair Kit for 2-1/2" - 4"  for Zurn backflow preventors 350/375/450/475. Pack of 6 check seat retainers.

A vacuum valve must be installed on the cold water inlet in either a vertical or horizontal position to assure warranty coverage a Marathon water heater. Without a vacuum valve properly installed, a break in the main supply line can create a vacuum within the water heater and irreparably damage the inner tank.

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A vacuum valve must be installed on the cold water inlet in either a vertical or horizontal position to assure warranty coverage a Marathon water heater.